The calibration equations for the CO2 Gas Sensors are listed below. They are divided into the old model (square body, pre-2007) and newer model (rounded body, post-2007).
Sensor ‘CO2 Gas’ (-DIN and -BTA, pre-2007)
Calibration ‘CO2 ppm’:
Equation: Linear
y = bx + a
a: 0
b: 2000
Calibration ‘CO2 ppt’:
Equation: Linear
y = bx + a
a: 0
b: 2
Calibration ‘CO2 %’:
Equation: Linear
y = bx + a
a: 0
b: 0.2
Calibration ‘CO2 mg/m^3’:
Equation: Linear
y = bx + a
a: 0
b: 3551.6
Sensor ‘CO2 Gas Sensor'(post-2007)
LOW RANGE
Calibration ‘CO2 Low ppm’:
Equation: Linear
y = bx + a
a: 20
b: 2500
Calibration ‘CO2 Low ppt’:
Equation: Linear
y = bx + a
a: 0.02
b: 2.5
Calibration ‘CO2 Low %’:
Equation: Linear
y = bx + a
a: 0.002
b: 0.25
Calibration ‘CO2 Low mg/m^3’:
Equation: Linear
y = bx + a
a: 35.516
b: 4439.5
HIGH RANGE
Calibration ‘CO2 High ppm’:
Equation: Linear
y = bx + a
a: 20
b: 25000
Calibration ‘CO2 High ppt’:
Equation: Linear
y = bx + a
a: 0.02
b: 25
Calibration ‘CO2 High %’:
Equation: Linear
y = bx + a
a: 0.002
b: 2.5
Calibration ‘CO2 High mg/m^3’:
Equation: Linear
y = bx + a
a: 35.516
b: 44395